Laura Worthington <[EMAIL PROTECTED]> writes: > I am confused as to how wget supports keep alive. I am using 1.8.2. > Persistent connections are part of HTTP 1.1, but wget is using HTTP > 1.0.
Persistent connections were available prior to HTTP/1.1, although they were not universally implemented. Wget uses the `Keep-Alive' request header to request persistent connections, and understands both the HTTP/1.0 `Keep-Alive' and the HTTP/1.1 `Connection: keep-alive' response header. Most servers support both styles of persistent connections because HTTP/1.0 clients were in extremely wide use when those servers were designed and implemented. (This is the case with Apache, but probably also with IIS and other major players in the field.) A new generation of servers might be expected to only support persistent connections when talking to HTTP/1.1 clients, but then again Wget will get HTTP/1.1 support at some point too.
